ERINIC

I just had the K1 mod done today. It was raining, so I can't feel the difference yet. If I wanted to take the next step, but only one step, which would get me better speed off the line and performance for light to light racing, headers or LSD?

MB Fanatic

I would say LSD. It will help maintain better traction which we all know the E55 has a problem with lol. This would help from lighting up the tires in the back.

04E55 AMG

LSD all the way! That should be your first mod since the car needs that in stock format let alone modded

enzom

I will go against the grain here and say headers. We are already pulling 1.8's and 1.9's out of the hole bone stock. That says that you are getting plenty of your power down. Even assuming that you could shave a tenth off of that with LSD, once you are out of first gear, the LSD doesn't really do anything for you. Headers, on the other hand, will always show their value.

Now - if you CAN'T put the power down with the K1, then it is a different story.

DerekFSU

I'd say neither. Best bang for the buck IMO are a set of DR's. Spend less than a grand and you'll cut more off your time than either of the other two things. Then, get the headers and then the LSD.

darren_dallas

Are you looking for track racing (1/4 mile or autocross), or standard street racing (pull up to the light and go, or gun it at 60mph against a vette or stang, etc.)?

For having fun around town I would say headers and pulley, for track sounds like the LSD might be a good start.

Ted Baldwin

I'd say neither. Best bang for the buck IMO are a set of DR's. Spend less than a grand and you'll cut more off your time than either of the other two things. Then, get the headers and then the LSD.

..........which drag radials do you use? Do you have drag radials in all four wheels or just in the rear wheels? what tires sizes. Thanks.

Ted

ERINIC

I want to shave time off 0-60 to pass vettes and porshes during everyday driving. If drag slicks are not part of the plan, headers or LSD?

04E55 AMG

For everyday driving you will love the K2 which will transform your car. Going with K1 is fine, but your car is a different animal with headers. Having the K2 in my car for the last several months makes me wonder why I waited so long.

Your car stock will pass most vettes and porsches. With K2 you will destroy most. Your car will be running 0-60 in under 4s and 1/4 times in the mid 11's.

Enjoy

DerekFSU

If you're just driving down the street I'd still get both but would start with the headers. I had the headers and then the LSD. While the LSD helps, it was not as impressive of a mod as the K2 was. I doubt you'll be running mid 11's but you might. My best was 11.65 with K2, LSD, and DR's. Usually it was in the upper 11.7's to 11.8's.

I run the BF DR's only on the rears with a 275 tire size. I pump the fronts up to about 45 psi. I'm looking for a cool, hopefully MB, 17 inch rim that will fit our cars so I can run the MT SR's which are suppose to be even stickier.

darren_dallas

Definitely go with crankshaft pulley and headers.

ERINIC

Does Kleeman charge for another computer upgrade when you put on headers or is it just the price of headers plus install? Do you even have to send the computer back in after the headers go on?

DerekFSU

Erinic, who are you using for your Kleemann work? M2 in Orlando, C2 in Tampa, someone else?

ERINIC

M2 - they think my 0-60 time and 1/4 mile time will be most affected w/ LSD. What say you? (BTW- they brag that they will have you in the 10's in no time!)

DerekFSU

Guys, he has K1 which INCLUDES the pulley.

LOL, they seem to be really cool guys. They haven't done any work on my car but they do have some good ideas. I'm workin' on it.

Is this the FINAL mod or are you going to do one then another? Is it going to be 12 months before you can do the next step or 3 months? In the end, I'd probably defer to my tuner's advice and then get everything when you can get it done.

I wish I had done DR's and LSD before I did K2. I did NOT break into the 11's with K2. That did not happen until I had the LSD and the DR's. It's kinda like the criticism of the 600's and the 65's- you can have all the HP in the world but if you can't properly get it to the pavement, then it doesn't matter.

04E55 AMG

My understanding is that they tweak the ECU slightly if you have headers. You may need to send it back but I am sure they will do it for free since you are a customer with K1.

ERINIC

I would like to only have one more mod and do it w/in the next 3 - 6 mos (have to get the wife used to the idea). If you had to chose only one more mod - which would it be? Am I to understand your performance increasedt he most w/ LSD as opposed to headers?

04E55 AMG

I was breaking into the 11's easily without LSD and running S03's with street psi in the tires and heavy OEM 19" rims. I am sure I can get into 11.7/11.8 range without LSD and DR's next time out. I have only been to the track twice in my life.

DerekFSU

There inlies the problem. I have NEVER run my car with the lsd but without the DR's. My largest HP gain was obviously with headers but that did not translate into much track performance due to traction issues. I did not wait to master the launch any further than I already had and I went and got the LSD with the DR's at the same time. The LSD and DR's gave me the largest performance improvement. But you have to remember that those came AFTER the headers so they really helped me take advantage of the power provided by the headers. Wow, what a circle.

What was your baseline dyno and then the dyno after the K1 install?

ERINIC

Max at the wheel was 404.83hp and 424.45 ft-lbs 84.38 degrees 29.97 in-Hg before K1. I have to get after dyno next week - they had a 1200 Hp Viper on the machine and I couldn't wait around for them to finish.

Jakpro1

Hey, quick question on dynoing the car.

So when I take it in.....they will be the ones giving it gas...not us... correct?

Just get worried bout some schmoo hurting my baby......

Thank God for the rev limiter.

darren_dallas

Yes. They gas it and change gears. Make sure you put it in dyno mode.

Vetluver

You don't need anything to smoke a Vette or Porsche, including TT X50. I have done no mods and routinely run away from everything out there (on the street). You'll find a few ringers with heavily modded turbos and KB blowers but for the most part a stock E55 will do a credible job against 99% of what's out there.

Mardeth

I would say, get the LSD if you want a performance increase between 0 and 60 and headers for above 60.

E55 RUSS

For 0-60 get LSD...Although I would get K2 1st...It will bring more pleasure in everyday driving...